I really like your take on the walls. That was very unique and I'm almost envious you came up with that description before me :-)

The story, up to this point, doesn't provide much in the way of scenery nor imagery. In my experience, horror utilizes the scenery/imagery to position and enhance the feeling the story evokes. Perhaps, establishing distance, direction, depth, smell, and color will help. You pointed out the walls (an excellent description to be sure) and the flickering lights but perhaps build a more coherent scene where you describe things that make the Arkham look even more terrifying.

I know you said that the plot was going to take off in the next chapter and you were just building a scene here, but is Arkham Asylum going to be an antagonist in the story as well as the Joker? If that is your aim, I recommend sitting down and jotting down some personality traits, some adjectives, and some images that really capture it. In my mind, that'll really help you build the scene.

I suppose this story is written for Batman afictionados so you're banking on the fact that most of your readers are well versed into the Batman mythos and have seen BB, TDK, and TDKR. That said: Even though most of your audience knows what the Joker and Arkam look like, it can't hurt to add some description to it. Especially, when Austin is looking at the clown through the video feed. Something tells me that Arkham doesn't use high-tech video and so the Joker's image looks distorted. Hope this all helps and you feel that my criticism is positive. Really looking forward to you posting more of this story!

This is awesome! The sample of 100 Bottles of Beer into Drops of Blood is genius. I'm going to keep reading. Bravo. Your prologue is very intriguing too. I'll give a complete assessment once I'm done reading but after reading the part with the song...I couldn't wait. This is dope! Checkout my story Shadow Of The Bat: Best Served Cold if you get a chance.